Lighting fixture



Feb. 12 1.924u

L. C. DOANE LIGHTXNG FIXTURE Filed Sent. 8, 1920 Hfs 1" man NEX.

Patented heb. 12, 19241.

rran-rric.

LEROY C. DON, CLEVELAND, OHIO, ASSIGNOR TO GENERAL ELECTRIC COMPANY,

A CORPORATION OF NEW' YORK. y

LIGHTING FIXTURE Application ieaseptember To alt ifi/0m it may 'concern Be it known that 1, lixanor C. DoANn, a citizen of the United States, residing at Cleveland, in the county ot Cuyahoga, State of Ohio, have invented certain new and use'- ul improvements in Lighting' Fixtures, of which the ollowino is a specification.

My invention relates to lighting /ix'turcs and more particularly to lighting ixtures of the enclosed type.

My object is to produce a totally enclosed lighting unit in which the incandescent lamp i" readily accessible for replacement or re moval without the necessity o1 removing the reflector or shade. rThis object is accomplished by supportingthe reiector so that it may be raised to expose the incandescent lamp through an aperture in the bottom of the reflector and in normally closing thc aperture when the'retiector is in a lowered po sition with a quickly detachable cover. Other advantages will be apparent from the apy pended specification to those skilled in the las ist

art.

My invention will be more fully under# stood by referring;` toV the accompanying drawingin which Fig. 1 is an elevation partially in section of a lighting fixture e1nbodying my invention; Fig. 2 is an enlarged plan and elevation view of: a spring clip used in connection with the iixture of Fig. 1: Fig. isfa modification of the fixture supporting means; Fig. et is an enlarged fragmentary elevation of ay detail thereof; and Fig. 5 is a plan view ot' a detail of the device shown in Fig. y

Referring to Figs. 1 and 2 of the drawing,. the ceilingr plate has attached thereto the iiexible cord l1, which contains thc current carryingV wires, by means ot the wedging clamps 12 and 13 and .the riibocr gasket 14. The clamp 12 is supported from the inner side oi' the ceilingl plate 1U and receives the rubber gasket 14 between its wedpging sur-- tace 15 and the flexible cord 1l. The clamp 13, which is. on the outside ol the ceiling plate 1t). v'screws onto the protruding port-ion ,of the clamp 12 and receives the gasket 151: on its wedglng' surface 16 so that uf'hen the clamp lll is screwed onto the clamp 12 the rubber gasket le is tightly compressed against the llexible cord 11 by the Wedging e, 1920. sriai No. 408,909.

surfaces 16 and 15 respectively so as to prethe action being similar to that of the clamps 12 and ll'and the 'gasket 14. A' nipple 22, which is screwed into the under side of the cap 17 around the cord 11, supports the lamp socket 23 hy being screwed into the vmetal cap 24 on the -upper'end thereof. An inter- .nal threaded' portion 25 on the lower'edges of the cap 17 receives the threaded upper endA of the canopy 26.

The canopy 26 terminates Aat the lower end in a Hare 27 which supports the member 28 which can be slid up around the canopy 26. The member. 28 has a series of'ingers 29 which are sprung over the heel 30 ot' a glass reflector 31 and in conjunction-with the Hare 27 .of the canopy 26, serves to support the relectorl as well as provide a substantially dust proof cover for the end of the refiector. An aperture 32 in the lower surface of thc` reflector 3l is suliciently large to permit the passage therethrough of an incandescent lamp 33 which is inserted in the socket 23. The aperture 32 is covered by a conical plate 341 held in place bythe ac-y tion of the. spring clip 35 whose opposite ends rest on the edge of the aperture. Y A nut 36 attached to the center of the clip 35 r`eceives the bolt 37 whose shank 38 slides through the tip of the conical plate 34 vand whose head 39, in the shape of an ornamental tassel, rests against the tip of the plate. A projection 40, caused by a notch near each end oi the springclip 35, slides on the inner surface of the conical plate 34 to give clearance to the edge of the aperture 32 between the end ot' the clip and the inner surface of the conical plate 34.' The conical plate 34 may be removed from the aperture 32 of the reflector 31 by withdrawing the head 39. from the tip of the plate 341 which action causes the spring clip 35y to be drawn down into the' conical plate 34 and so releases the edge of the aperture l32 from engagement with the ends of the spring clip 35. By reversing the operation, the plate 34 is placed over the aperture 32.

To insert or remove an incandescent lanip 33, the conical plate 34 is removed as just described and the -reflector 31 is raised, the member 28 sliding up the canopy .26 and the lamp 33 passing through the aperture 32 of the reflector as shown in the dot-ted lines of Fig. 1. lhenthe lamp 33 has been replaced, the reflector is lowered until the member 28'rests on the flare 27 of the canopy 26. The conical plate 34 is then replaced over the aperture 32. The unit is preferably assembled by v)lacing the 'clamp 2l, rubber gasket 19 an cap 17 over the lower end of the flexible cord 11 and fastening them together so that the cord 1 upper surface and enameled sides and lower supports the cap 17. 'The nipple 22 is then inserted in the cap 17 and the lamp socket 23v attached thereto. The member 28 is then slipped over the heel 30 of the reflector 31. and the canopy 26 is inserted through the aperture 32 of the reflector and is engaged with the member 28 which slides down the 'the head `39 being released to permit the ends of the spring clip 35 to engage the edges of the aperture 32. In the drawing the reflector 31 is shown as havmg a clear surface.

In Figs. 3, 4 and 5, I have shown a modification in which the canopy 41 is attached to the socket cap 42 of thc lamp socket 43 and the assembly of the complete unit is made more readily and more conveniently. In this case the metal cap 42 ot 'the socket 43 is provided with three radial projections 44 which engage three similar recessed slots 45 in the upper end -of the canopy 41. A sprin 46, which bears against the cover cap 4 carried on the threaded extension 48 of the socket cap 42 and against a washer ,49 resting on' the upper end of the canopy 41, tends to retain the projections 44 in the recess of the slots 45. The canopy 41 is released by pressing upwardly and turning the canopy to bring the radial projections 44 out of engagement with 'the recess of the slots45. A ring 50, which screws into the threaded extension 43. is used to support the fixture although a conduit may be used.

. In the caseof the modification. the assembly of the unit is preferably made as tollows. The washer 49 is placed against the cap 42 of the socket 43. the spring 4G is placed around the threaded extension 48 and on the washer 4*.) and the ornamental cap 47 is then screwed on the Athreaded tension. The threaded extension 45% may non' be attached to the supporting ring 5t) or, to conduit. The member 28 is sprung over the heel 3() of the reflector 3l as before and the canopy 4l. passed through the aperture 32 of the reflector to engage the member 28 which is brought to s rest against the flare 27. The canopy 41 is now passed over the socket 43 against the `washer 49 to compress the spring. 46 and bring the recessed slots 45 into engage ment with the' projections 44. The canopy is then turned slightly to place the ro ,jections 44 in the recesses of the slots 45. The canopy and reflector are now supported and the reflector is raised, a lamp is inserted in the socket 43, the reflector is lowered and the conical plate 34 is placed over the aperture as before.

What I claim as new and desire to secure by Letters Patent of the United States, isn--n 1. Ina totally enclosing lighting fixture,

cal cover to discngage the edges of Said aperture.

. 1 A light ing lixt ure comprising a globe, an

incandescent electric lamp within said globe, ajsocket 'for said lamp, a member surrounding saidsocket and extending through an opening in said globe to slidably support the latter, said globe having another opening substantially in Mignment with said lamp and of snflicient size. to permit the globe to be Imoved over said lamp, and a closure for said last mentioned opening.

3. In a lighting fixture, the combination with a socket for an electric incandescent lamp and a support therefor. of a lobe disposed to surround the lamp anc having upper and lower openings, the latter opening being sufficiently large to allow the passage therethrongh of the lamp, a closure for said lower opening and a spring member engaging the inner suface of the bottom of said globe for retaining said closure in position. s

4. In a lighting fixture. the combination with a socket for an electric incandescent Mil lamp and a support therefor, of a globe diS- of the bottoni of said globe 'and a, sprin posed to surround the lamp and having upmeinber engaging the inner Surface of the per and lower openings, the latter opening bottom of said globe for holding said closure. 4being :sufficiently` large to allow the. paseage in position. 5 therethrough of the lamp, a closure for said 'ln witness whereofn I have hereunto set loiver opening of suiicient diameter that my hand this third da f' ofSe tomber, 1920. its edges fit tightly against the outer surface LE @Y o. DOANE. 

